Tractor.



' C. A. OLSON.

TRACTOR.

APPLICATION HLED JUNE-2i. 1915.

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Patented Dec. 28, 11915". j

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TRACTOR.

APPLICATION FILED JUNE 21.1915.

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TRACTOR.

APPLlcAmN FILED luna 2x, 19u- Lwa @muted Deaf. 28, 1915.

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TRACTOR.

To all elf/wm. t may concern.'

Be it known that I, CARL A. OLSON, a citizen of the United States, residing at Milan, in the county of Chippewa and State of Minnesota, have invented certain new and useful Improvements in Tractors; and I d0 declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in tractors, and more particularly to m0untings for the driving wheels thereof, the object of the invention being to provide extremely simple yet highly eiiieient construction for the attainment of the desired ends.

l/Vith this general object in view, the invention resides in certain novel features of construction and in unique combinations of parts to be hereinafter fully described and claimed.

In describing the invention, I shall refer `t0 the accompanying drawings which contiti stitute a part which:

Figure l is a side elevation of a tractor constructed in accordance with my invention; Fig. 2 is a horizontal section, partly in elevation, taken substantially upon the planes indicated by the line 2-2 of Fig. 1; Fig. 3 is a vertical transverse section as cut on the plane indicated by the line of Fig. l; Fig. l is a central section through one of the driving wheels; Fig. 'is a side elevation of such wheel, and" Figs. G and 7 are details to be hereinafter referred to.

n these drawings wherein like reference characters designate correspondingr parts throughout the several views, the numerals 1 have reference to a pair ol" longitudinally disposed sills which extend from one end of the machine to the other end thereoie in parallel relation. rilhe front ends of thesills 1 are supported by any preferred type of truck including wheels 2 which may be steered by actuation of the steering wheel 2a, through the instrumentality of suitable connections forming no part of the present application. Secured to the rear ends of the sills in any appropriate manner and projecting laterally fromv` said sills, is a of the application and in transverse bar 3, while similarly secured to f the intermediate portions ot the aforesaid sills 1 and likewise projecting laterally in opposite directions from said sills, is an additional transverse bar 4, the outer ends Specification of Letters Patent.

Application filed .Tune 21, 1915.

'com prises a Patented Dec. Q, i915.. Serial No. 35,378.

of the bars 3 and 4 being bolted orotherwise secured to a pair of supplemental lon* gitudinally disposed sills 5 which are spaced outwardly from and lie parallel to the sills 1.

Bolted or secured in any other appropri ate manner to the central portions of the sills 1, are the upright transversely alined posts 6 whose lower ends depend from the sills l, while their upper ends risc considerable distances above said sills and are se cured to transverse horizontally disposed bars 7 which are suitably braced at 7a to the transverse bars and 4.

The bars 7 project laterally beyond the upright posts (S and are secured to additional upright posts (5 which are alincd transversely with the posts (i, but which are secured to and rise from the supplen'xental sills 5, the lower ends of the posts li being extended below said sills appropriate distances, while their upper ends continue above the bars 7 and support the rear end of an appropriate top 8, the details of which need not be entered into in the present application.

Disposed respectively .in advance of the posts G and 6, are additional and shorter posts 9 and 9 which rise respectively from the sills 1 and while positioned in rear of said posls (3 and (3 are 'ither posts l() and 10, all of the posts 9 and verse alincmeut, while those indicated at 10 and l0 are likewise alnrd. in the present embodiment of the invention, the upper and lower ends of the posts Si; 9, 10, and 10, are shownnas held in spaced ielationfrom their respective posts G and 6, by horizontally disposed spacing blocks 11 through which an'nd through the posts, lbngitudinally disposed bolts 12 are passed.` By this constrution, two pairs of upright :frame members are provided, such members rising from the two pairs of sills hereinbei'ore described, these members being ofutility to become evident as the description proceeds.

Positioned between the sills l and 5 at each side of the machine, and likewise "disposed betwe n the numerous posts which are secured tosaid sills, are the driving wheels 13, the details of which arel disclosed most chearly in Figs. 3, 4, and 5. 'Each wheel 13 ring-shaped hub member 14 having at its central portion an internal gear ring 15, while the inner face of the hub member 14, on opposite sides of the gear ring 15, constitutes tracks upon which rollilo .are the annular tracks 19 which are disposed concentric with the hub member 14 and the rim 18, said tracks serving not only to impart rigidity to the wheels, but being designed for purposes yet to be described.

Supported upon appropriate sleepers 20 which extend from the transverse bar 3 to the bar 4 and which are interposed between the sills 1, is a differential or compensating gear 21 which is here shown as driven by a chain 22 from a` counter-shaft 23 driven by an engine shaft the latter leading to an)7 appropriate type of engine (not shown) which is confined in a hood built over the front end of the main bed frame of the ma,- ehine, said differential also having connection with a transverse bar 26 which. in turn is secured to thel longitudinally extending rails 27, the latter being bolted or otherwise fastened to the inner sides of the posts rising from the sills 1 and being extended therefrom to points above the front and rear ends of the sills 1, upright standards 28 establishing connection between the aforesaid rails and the sills 1 at suitableintervals.

Extending from the differential 21, is the sectional shaft 29 which is positioned horizontally and rotatably mounted in bearing openings formed through the alined posts (i and G, or any appropriate bearings carried by said posts. The opposite ends of the shaft 29 are provided with spin' pinions 30 which engage the internal gear rings 15 of the hubs 14. Other pinions 31 (see Fig. 6) are keyed to the intermediate portons of horizontally disposed shafts 32 which are rotatably supported by the alined posts 6 and G, one shaft being positioned above each pinion 30, while another is disposed below said pinion as clearly shown in Figs. 1 and 3.

Mounted loosely uponrthe shafts 32 are the flanged rollers 33 which contact with the inner curved surfaces ot' the hubs 14, while additional flanged rollers 33 are keyed to other horizontal shafts 32 and likewise con.

tact with the inner curved surfaces of said hubs, the shafts 32 being supported by the posts 9 and 9a, and by those indicated at 10 and 10,

By arrangingl the numerous rollers 33 and 32 as disclosed in the drawings, the wheels 18 are held concentric with the shaft 29, but not as effectively as necessary. The annular tracks 19 have therefore been provided as bracing means for the wheels, such tracks engaging grooved rollers 34 which are shown in the present embodimentof the iny vention as mounted upon the lower and intermediateportions of the posts 6 and 6, and as carried by brackets 35 projecting from the sills l and 5 (see more particularly Fig.'

2). could probablybe positioned otherwise than as shown in the drawings, they are preferably disposed radially in res ect to the tracks 19, whereby the flanges o the rollers may receive therebetween the horizontally extending flanges of said tracks, thereby reliably preventing dislocation of parts.

By constructing the tractor in the manner above defined and depicted in the accompanying illustration, it will be evident that altlioughthe machine may be manufactured at comparatively small expense, the same will be highly efficient and durable, and will possess a number of advantages, particular emphasis being laid upon the provision of the novel bracing means for the wheels (the rollers 34 and tracks 19) and upon the framework for supporting the numerous rollers at proper points for accomplishing the best results.

In the drawings, certain specific details of' construction have been shown, and in the preceding such details have been described, but it is to be understood that l need not be restricted thereto otherwise than to the extent to which the appended claims limit me.

l claim as my invention:

1. In combination, a frame having supporting and steering means at its front end and including at its rear end two pairs of parallel longitudinally disposed sills, upright posts secured to and rising from the sills in transverse alineiiient, a driving wheel disposed between the sills of each of the aforesaid pairs, ay transverse bar above the wheels to which thev upper ends of the posts are secured, annular. tracks carried by opposite sides of the wheels, track engaging roll ers rotatably mounted on the posts, and similar rollers mounted adjacent thc sills.'

2. ln combination, a frame having supporting and steering means at its front end and including at its rear end two pairs of parallel longitudinally disposed sills, front and rear posts rising from the sills in trans verse alinement, intermediate posts rising from said sills in transverse alinement and having connections with the aforesaid posts, a driving wheel mounted between the sills of each of the aforesaid pairs, inner and outer concentric annular tracks on said wheels, rollers on the front and/rear posts engaging one auiiiilar trackwand additional rollers on the other pots engaging the othei track.

3. In combination, a frame having supporting and steering means at its front end Although the axes of the rollers 34 A income "and including at its rear end two pairs of ]o ed between the sills of each of the aforesaid pairs, inner and outer concentric annular tracks on4 said Wheels, rollers on the front and rear posts engaging one annular track, and additional rollers on the other posts engaging' the other track.

In testimony* whereof I have hereunto set my hand in presence of two subscribing wit nesses.

I CARL A. OLSON. Witnesses H, J. LARSON, A. D. COUNTRYMAN. 

